基于粗糙集理论的除氧系统智能控制器设计

1前言热力除氧是一个较为复杂的过程,除氧系统由4台除氧器组成,每台除氧器都通过汽平衡和水平衡与其它除氧器相连。各除氧器之间的压力、水位相互影响,因而除氧系统控制难度较大,系统的鲁棒性差。系统运行中经常产生振荡,出现各除氧器水位此高彼低反复变化,同时压力也不稳定,除

Design of an Intelligent Controller in a Deaerating System Based on a Rough Sets Theory

Expounded is the control tactic and establishment of a knowledge database for an intelligent controller in a deaerating system.With a rough sets theory serving as a basis,redundant attributes have been simplified,resulting in a most simplified knowledge database.A method is presented for designing an intelligent controller and establishing a knowledge database by making use of the rough sets theory.The intelligent controller thus designed was once used in the modification of a deaerating system for a power-supply station affiliated to an oil refinery.The practical operation shows that the controller under discussion can guarantee the stable operation of the system during a start-up and switching-over process with operating indexes of the deaerating system being fulfilled.